Measures the freezing point of coolants and concentration of Ethylene/Propylene Glycol Refractometer measures the Propylene/Ethylene Glycol freezing point from -50 to 0°C and the Specific Gravity of battery acid from 1.11 to 1.30 and provides a quick reference of battery charge condition. Requires only 2 or 3 drops of solution for fast and accurate readings. Automatic Temperature Compensation provides repeatable measurements on an easy to read scale. Prism and lens with a simple focus adjustment. Includes carrying case and calibration screwdriver. Measures -50 to 0°C Propylene/Ethylene Glycol freeze point and 1.11 to 1.30 Specific Gravity of Battery Acid Automatic Temperature Compensation (ATC) Requires only 2 or 3 drops of solution The prism and lens with a simple focus adjustment Complete with case, calibration screwdriver, plastic pipette and calibration solution

Specifications	Range	Resolution	Basic Accuracy
Propylene Glycol freeze point	-50°C to 0°C	1°C (1%)	±2%
Ethylene Glycol freeze point	-50°C to 0°C	1°C (1%)	±2%
Specific Gravity of Battery Acid	1.15 to 1.30	0.01
Dimensions/Weight	6.5x1.5x1.5" (165x38x38mm)/ 7oz (200g)